I know many people are badly trained but even in the basic conversation among...

I know many people are badly trained but even in the basic conversation among teenagers or between cousins, you are supposed to talk about your fear, what you dream of, not a description of your disorder. You don't just say that's rejection sensitivity and call it a day (which by the way, not a real thing).

So now what. You have a name for it, it doesn't seem like your fault but either biology or society. So you probably won't do anything about it, even the most basic task you can do – think.

For someone who sees that they can do nothing but kindness, that “sensitivity” comes from assigning bad intentions to everyone else. Then the “rejection” might be 1% real.

For someone who puts others' needs first, it might not have anything to do with either “rejection” or “sensitivity”, but probably means they don't know if they are entitled to others' time and effort.

Putting words into your experiences is more important than having any diagnosis.